I took a chance when I purchased this scope. I thought it would be a plastic type fantastic but I was pleasantly surprised  I have bought a few of these scopes since and they have given hours of shooting fun to many people. I have only positive things to say. The focus is clear, The build quality is good,the adjusters work well on all of the scopes I have used, They have fitted on most of the air guns or .22 rifles well or if not A new slide rail has been brought. The scope is an excellent price for what they are.